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Ratling [72]
2 years ago
11

Solve the following for the variable for 180-x=3(90-x)

Mathematics
1 answer:
lara31 [8.8K]2 years ago
6 0
X = 45 is the answer
180-x = 3(90-x)
=> 180-x = 270 - 3x
=> -x+3x = 270-180
=> 2x = 90
=> x = 90/2
=> x = 45
Please mark brainliest.
Have good day :)
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Your work looks good, the ages will be 

\bf \stackrel{\textit{20 to 30}}{25\%}~~+~~\stackrel{\textit{31 to 40}}{22\%}~~+~~\stackrel{\textit{41 to 50}}{13\%}\implies 60\%&#10;\\\\\\&#10;\textit{60\% of 125000}\implies \cfrac{60}{100}\cdot 125000\implies 75000
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